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Author SHA1 Message Date
Linus Torvalds
25601e8544 Merge tag 'char-misc-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc 
Pull char / misc / IIO driver updates from Greg KH:
 "Here is the big set of char, misc, iio, and other smaller driver
  subsystems for 6.15-rc1. Lots of stuff in here, including:

   - loads of IIO changes and driver updates

   - counter driver updates

   - w1 driver updates

   - faux conversions for some drivers that were abusing the platform
     bus interface

   - coresight driver updates

   - rust miscdevice binding updates based on real-world-use

   - other minor driver updates

  All of these have been in linux-next with no reported issues for quite
  a while"

* tag 'char-misc-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (292 commits)
  samples: rust_misc_device: fix markup in top-level docs
  Coresight: Fix a NULL vs IS_ERR() bug in probe
  misc: lis3lv02d: convert to use faux_device
  tlclk: convert to use faux_device
  regulator: dummy: convert to use the faux device interface
  bus: mhi: host: Fix race between unprepare and queue_buf
  coresight: configfs: Constify struct config_item_type
  doc: iio: ad7380: describe offload support
  iio: ad7380: add support for SPI offload
  iio: light: Add check for array bounds in veml6075_read_int_time_ms
  iio: adc: ti-ads7924 Drop unnecessary function parameters
  staging: iio: ad9834: Use devm_regulator_get_enable()
  staging: iio: ad9832: Use devm_regulator_get_enable()
  iio: gyro: bmg160_spi: add of_match_table
  dt-bindings: iio: adc: Add i.MX94 and i.MX95 support
  iio: adc: ad7768-1: remove unnecessary locking
  Documentation: ABI: add wideband filter type to sysfs-bus-iio
  iio: adc: ad7768-1: set MOSI idle state to prevent accidental reset
  iio: adc: ad7768-1: Fix conversion result sign
  iio: adc: ad7124: Benefit of dev = indio_dev->dev.parent in ad7124_parse_channel_config()
  ...
 2025-04-01 11:26:08 -07:00
Angelo Dureghello
8dbeb41380 doc: iio: ad7380: describe offload support 
Add a section to the ad7380 documentation describing how to use the
driver with SPI offloading.

Signed-off-by: Angelo Dureghello <adureghello@baylibre.com>
Link: https://patch.msgid.link/20250310-wip-bl-spi-offload-ad7380-v4-2-b184b37b7c72@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-03-11 19:09:17 +00:00
Alisa-Dariana Roman
9525c66de3 docs: iio: add AD7191 
Add documentation for AD7191 driver.

Signed-off-by: Alisa-Dariana Roman <alisa.roman@analog.com>
Reviewed-by: David Lechner<dlechner@baylibre.com>
Link: https://patch.msgid.link/20250228141327.262488-4-alisa.roman@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-03-11 19:09:05 +00:00
Julien Stephan
aac287ec80 docs: iio: ad7380: add adaq4381-4 
adaq4381-4 is the 14 bits version of adaq4380-1 chip. Add it to the
documentation.

Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250226-ad7380-add-adaq4381-4-support-v1-3-f350ab872d37@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-03-04 15:05:50 +00:00
Marcelo Schmitt
9b4b9791dd Documentation: iio: Add ADC documentation 
ADC inputs can be classified into a few different types according to how
they measure the input signal, how restrained the signal is, and number of
input pins. Even though datasheets tend to provide many details about their
inputs and measurement procedures, it may not always be clear how to model
those inputs into IIO channels.

For example, some differential ADCs can have their inputs configured into
pseudo-differential channels. In that configuration, only one input
connects to the signal of interest as opposed to using two inputs of a
differential input configuration. Datasheets sometimes also refer to
pseudo-differential inputs as single-ended inputs even though they have
distinct physical configuration and measurement procedure.

Document consolidated ADC input types and how they are usually described
and supported in device tree and IIO, respectively.

Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/e6ac2a595f06ba2d5ff0eb86e5895479c9dd797f.1739998491.git.marcelo.schmitt@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-03-04 13:17:51 +00:00
Lothar Rubusch
b543d881e8 docs: iio: fix wrong driver name in documentation 
The ADXL380/382 documentation uses in one place a wrong driver name.
Adds no functional change.

Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com>
Link: https://patch.msgid.link/20250221194658.41358-1-l.rubusch@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-03-04 13:17:51 +00:00
Robert Budai
aaa9d61634 docs: iio: add documentation for adis16550 driver 
Add documentation for adis16550 driver which describes the driver device
files and shows how the user may use the ABI for various scenarios
(configuration, measurement, etc.).

Co-developed-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Co-developed-by: Ramona Gradinariu <ramona.gradinariu@analog.com>
Signed-off-by: Ramona Gradinariu <ramona.gradinariu@analog.com>
Signed-off-by: Robert Budai <robert.budai@analog.com>
Link: https://patch.msgid.link/20250217105753.605465-7-robert.budai@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-03-04 13:17:47 +00:00
Mauro Carvalho Chehab
737575dbab docs: iio: Allow creating cross-references ABI 
Now that Documentation/ABI is processed by automarkup, let it
generate cross-references for the corresponding ABI file.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/10e7d46360b5e5782d5c09e2706ba47c2315df4f.1739254867.git.mchehab+huawei@kernel.org
 2025-02-18 13:42:46 -07:00
Esteban Blanc
b29050e8b3 docs: iio: ad4030: add documentation 
This adds a new page to document how to use the ad4030 ADC driver

Signed-off-by: Esteban Blanc <eblanc@baylibre.com>
Link: https://patch.msgid.link/20250214-eblanc-ad4630_v1-v4-6-135dd66cab6a@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-02-16 15:40:51 +00:00
Trevor Gamblin
c26b0854eb doc: iio: ad4695: describe oversampling support 
Add a section to the ad4695 documentation describing how to use the
oversampling feature. Also add some clarification on how the
oversampling ratio influences effective sample rate in the offload
section.

Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>
Tested-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250109-ad4695-oversampling-v2-2-a46ac487082c@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-02-11 19:32:31 +00:00
David Lechner
5031c9df4a doc: iio: ad4695: add SPI offload support 
Document SPI offload support for the ad4695 driver.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250207-dlech-mainline-spi-engine-offload-2-v8-15-e48a489be48c@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-02-11 19:32:31 +00:00
David Lechner
f06a9c3672 doc: iio: ad7944: describe offload support 
Add a section to the ad7944 documentation describing how to use the
driver with SPI offloading.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250207-dlech-mainline-spi-engine-offload-2-v8-12-e48a489be48c@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-02-11 19:32:31 +00:00
Julien Stephan
7ad920ce34 docs: iio: ad7380: add alert support 
Add a section for alert support, explaining how user can use iio events
attributes to enable alert and set thresholds.

Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Link: https://patch.msgid.link/20250108-ad7380-add-alert-support-v4-5-1751802471ba@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2025-02-03 19:15:37 +00:00
Per-Daniel Olsson
0c6db4506a iio: light: Add support for TI OPT4060 color sensor 
Add support for Texas Instruments OPT4060 RGBW Color sensor.

Signed-off-by: Per-Daniel Olsson <perdaniel.olsson@axis.com>
Link: https://patch.msgid.link/20241218104836.2784523-3-perdaniel.olsson@axis.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-12-28 14:28:13 +00:00
David Lechner
435004291c iio: adc: ad4695: move dt-bindings header 
Move the dt-bindings header file to the include/dt-bindings/iio/adc/
directory. ad4695 is an ADC driver, so it should be in the adc/
subdirectory for better organization. Previously, it was in the iio/
subdirectory.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20241113-iio-adc-ad4695-move-dt-bindings-header-v1-1-aba1f0f9b628@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-12-07 17:47:58 +00:00
Darius Berghe
2b1dc7f140 iio: imu: adis16480: add devices to adis16480 - docs 
Add datasheet links for adis16486, adis16487 and adis16489
Six Degrees of Freedom Inertial Sensors into the existing
adis16480 driver documentation.

adis16486 is similar to adis16485, has the exact same channels
but acceleration and delta velocity scales are different.

adis16487 is fallback compatible with adis16485.

adis16489 is similar to adis16488 but lacks the magnetometer
and has a different accelerometer scale.

Signed-off-by: Darius Berghe <darius.berghe@analog.com>
Link: https://patch.msgid.link/20241108125814.3097213-3-darius.berghe@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-12-07 17:11:00 +00:00
Julien Stephan
5e66d01f60 docs: iio: ad7380: add adaq4370-4 and adaq4380-4 
Adding documentation for adaq4370-4 and adaq4380-4 supported devices. In
particular, document the reference voltage mechanism and the gain
parameter that are specific to adaq devices.

Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20241030-ad7380-add-adaq4380-4-support-v4-5-864ff02babae@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-11-09 10:42:03 +00:00
Jonathan Cameron
e459ca0aec Merge commit '9365f0de4303f82ed4c2db1c39d3de824b249d80' into HEAD 
Merge v6.12-rc6 via char-misc-next to get some fixes needed for next few
patches in IIO.
 2024-11-09 10:39:52 +00:00
Greg Kroah-Hartman
9365f0de43 Merge 6.12-rc6 into char-misc-next 
We need the char/misc/iio fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2024-11-05 09:36:29 +01:00
Julien Stephan
795114e849 docs: iio: ad7380: fix supply for ad7380-4 
ad7380-4 is the only device from ad738x family that doesn't have an
internal reference. Moreover it's external reference is called REFIN in
the datasheet while all other use REFIO as an optional external
reference. Update documentation to highlight this.

Fixes: 3e82dfc82f ("docs: iio: new docs for ad7380 driver")
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Link: https://patch.msgid.link/20241022-ad7380-fix-supplies-v3-5-f0cefe1b7fa6@baylibre.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-24 18:30:47 +01:00
Guillaume Stols
1346e2566a Documentation: iio: Document ad7606 driver 
The Analog Devices Inc. AD7606 (and similar chips) are complex ADCs that
will benefit from a detailed driver documentation.

This documents the current features supported by the driver.

Signed-off-by: Guillaume Stols <gstols@baylibre.com>
Link: https://patch.msgid.link/20241015-ad7606_add_iio_backend_support-v5-3-654faf1ae08c@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-21 19:19:25 +01:00
Trevor Gamblin
78134832a1 docs: iio: new docs for ad7625 driver 
Add documentation for the AD7625/AD7626/AD7960/AD7961 ADCs.

Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>
Link: https://patch.msgid.link/20240909-ad7625_r1-v5-3-60a397768b25@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-15 18:59:41 +01:00
Ivin Joel Abraham
ee8caf4254 docs: iio: fix grammatical error 
Clarify the instruction for disabling autocalibration by adding the word
"by"

Signed-off-by: Ivin Joel Abraham <ivinjabraham@gmail.com>
Link: https://patch.msgid.link/20241002100341.110435-1-ivinjabraham@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-10-06 12:43:31 +01:00
David Lechner
b5fe2f7bac doc: iio: ad4695: update for calibration support 
Calibration support has been added to the ad4695 driver, so update the
documentation to reflect this.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240820-ad4695-gain-offset-v1-3-c8f6e3b47551@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-09-03 18:49:43 +01:00
David Lechner
0a2d94e9fc doc: iio: ad4695: document buffered read 
Update the ad4695 documentation to say that buffered reads are
supported. Since there are 4 possible modes of reading conversion data,
it is useful to know which one is actually being used, namely the
advanced sequencer mode.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240813-iio-adc-ad4695-buffered-read-v2-2-9bb19fc1924b@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-08-17 15:37:38 +01:00
Julien Stephan
1ca99efa17 docs: iio: ad7380: add support for single-ended parts 
The AD7380 family has some compatible single-ended chips: AD7386/7/8(-4).
These single-ended chips have a  2:1 multiplexer in front of each ADC.
They also include additional configuration registers that allow for either
manual selection or automatic switching (sequencer mode), of the
multiplexer inputs. Add a section to describe this.

Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240731-ad7380-add-single-ended-chips-v2-7-cd63bf05744c@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-08-03 11:33:35 +01:00
Marcelo Schmitt
dfcc937a00 Documentation: Add AD4000 documentation 
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Tested-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/aeee5fd9deccf85beadecf58c9b938b97a3aeba5.1720810545.git.marcelo.schmitt@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-08-03 10:55:34 +01:00
David Lechner
316c957fee Documentation: iio: Document ad4695 driver 
The Analog Devices Inc. AD4695 (and similar chips) are complex ADCs that
will benefit from a detailed driver documentation.

This documents the current features supported by the driver.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-08-03 10:13:37 +01:00
Julien Stephan
3e82dfc82f docs: iio: new docs for ad7380 driver 
This adds a new page to document how to use the ad7380 ADC driver.

Credit: this docs is based on ad7944 docs.

Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Link: https://patch.msgid.link/20240709-ad7380-add-docs-v1-1-458ced3dfcc5@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-08-03 10:13:36 +01:00
Antoniu Miclaus
b6a097a9af docs: iio: add documentation for adxl380 driver 
Add documentation for adxl380 driver which describes the driver
device files and shows how the user may use the ABI for various
scenarios (configuration, measurement, etc.).

Signed-off-by: Ramona Gradinariu <ramona.gradinariu@analog.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://patch.msgid.link/20240708104114.29894-3-antoniu.miclaus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-08-03 10:13:36 +01:00
Paul Cercueil
ebe061b9cc Documentation: iio: Document high-speed DMABUF based API 
Document the new DMABUF based API.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Co-developed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Link: https://patch.msgid.link/20240620122726.41232-7-paul@crapouillou.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-06-30 11:30:18 +01:00
Ramona Gradinariu
ef60f9ca26 docs: iio: add documentation for adis16480 driver 
Add documentation for adis16480 driver which describes the driver
device files and shows how the user may use the ABI for various
scenarios (configuration, measurement, etc.).

Signed-off-by: Ramona Gradinariu <ramona.gradinariu@analog.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240528142409.239187-7-ramona.gradinariu@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-06-08 14:44:21 +01:00
Ramona Gradinariu
9bc8b4d27c docs: iio: add documentation for interfacing tools 
Add documentation for IIO interfacing tools describing the available
tools which can be used to retrieve data from IIO sysfs.
Reference this documentation in adis16475.rst

Signed-off-by: Ramona Gradinariu <ramona.gradinariu@analog.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240528142409.239187-6-ramona.gradinariu@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-06-04 19:53:10 +01:00
David Lechner
633e3015ca docs: iio: ad7944: add documentation for chain mode 
Add documentation for chain mode support that was recently added to the
AD7944 ADC driver.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20240425-iio-ad7944-chain-mode-v1-2-9d9220ff21e1@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-04-29 20:53:25 +01:00
Ramona Gradinariu
c19f273cae docs: iio: adis16475: fix device files tables 
Remove in_accel_calibbias_x and in_anglvel_calibbias_x device files
description, as they do not exist and were added by mistake.
Add correct naming for in_accel_y_calibbias and in_anglvel_y_calibbias
device files and update their description.

Fixes: 8243b2877e ("docs: iio: add documentation for adis16475 driver")
Signed-off-by: Ramona Gradinariu <ramona.gradinariu@analog.com>
Link: https://lore.kernel.org/r/20240424094152.103667-2-ramona.gradinariu@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-04-29 20:53:25 +01:00
David Lechner
18b51455e6 docs: iio: new docs for ad7944 driver 
This adds a new page to document how to use the ad7944 ADC driver.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20240322-mainline-ad7944-doc-v2-2-0923d35d5596@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-03-28 13:22:15 +00:00
Ramona Gradinariu
8243b2877e docs: iio: add documentation for adis16475 driver 
Add documentation for adis16475 driver which describes
the driver device files and shows how the user may use the
ABI for various scenarios (configuration, measurement, etc.).

Signed-off-by: Ramona Gradinariu <ramona.gradinariu@analog.com>
Link: https://lore.kernel.org/r/20240221085848.991413-4-ramona.gradinariu@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-02-28 19:26:36 +00:00
Ramona Gradinariu
d5422a85ed docs: iio: add documentation for device buffers 
Add documentation for IIO device buffers describing buffer
attributes and how data is structured in buffers using
scan elements.

Signed-off-by: Ramona Gradinariu <ramona.gradinariu@analog.com>
Link: https://lore.kernel.org/r/20240221085848.991413-3-ramona.gradinariu@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-02-28 19:26:36 +00:00
Ramona Gradinariu
a3e58e4aa9 docs: iio: Refactor index.rst 
Refactor index.rst such that it contains a section for generic
documentation and a section for Kernel Drivers documentation.

Signed-off-by: Ramona Gradinariu <ramona.gradinariu@analog.com>
Link: https://lore.kernel.org/r/20240221085848.991413-2-ramona.gradinariu@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2024-02-28 19:26:36 +00:00
Andrea Merello
130476acfd docs: iio: add documentation for BNO055 driver 
The bno055 driver is rather complex and have some oddities and not-obvious
things that worth to document (e.g. calibration files).

This patch also contains this [0] fix squashed in.

[0] https://lore.kernel.org/lkml/20220704034041.15448-1-bagasdotme@gmail.com/

Signed-off-by: Andrea Merello <andrea.merello@iit.it>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220907132205.28021-15-andrea.merello@iit.it
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2022-09-21 18:42:56 +01:00
Gwendal Grignou
dafcf4ed83 iio: hrtimer: Allow sub Hz granularity 
Allow setting frequency below 1Hz or sub 1Hz precision.
Useful for slow sensors like ALS.

Test frequency is set properly:
modprobe iio-trig-hrtimer && \
mkdir /sys/kernel/config/iio/triggers/hrtimer/t1 && \
cd /sys/bus/iio/devices/triggerX ;
for i in 1 .1 .01 .001 ; do
  echo $i > sampling_frequency
  cat sampling_frequency
done

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210226014733.2108544-1-gwendal@chromium.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2021-03-25 19:13:49 +00:00
Luca Ceresoli
c1d82dbcb0 docs: iio: fix example formatting 
This line is part of the code snippet, so it has to be nested in order
to be rendered correctly.

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Link: https://lore.kernel.org/r/20210215143511.25471-2-luca@lucaceresoli.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2021-03-11 20:47:07 +00:00
Yanteng Si
1008bfd8e3 docs: iio: Correct a typo 
There are two EP9312, one of them should be 9315

Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Link: https://lore.kernel.org/r/20210119030320.2860870-1-siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
 2021-01-21 14:06:00 -07:00
Lars Poeschel
2e915ea0bf Documentation: iio: fix a typo 
Rename function name to the actual name referenced in
struct iio_sw_trigger_ops.

Signed-off-by: Lars Poeschel <poeschel@lemonage.de>
Link: https://lore.kernel.org/r/20200904091911.269715-1-poeschel@lemonage.de
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
 2020-09-09 11:41:20 -06:00
Mauro Carvalho Chehab
982649915d docs: filesystems: convert configfs.txt to ReST 
- Add a SPDX header;
- Adjust document and section titles;
- Use copyright symbol;
- Some whitespace fixes and new line breaks;
- Mark literal blocks as such;
- Add it to filesystems/index.rst.

Also, as this file is alone on its own dir, and it doesn't
seem too likely that other documents will follow it, let's
move it to the filesystems/ root documentation dir.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/c2424ec2ad4d735751434ff7f52144c44aa02d5a.1588021877.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
 2020-05-05 09:23:25 -06:00
Mauro Carvalho Chehab
df1b7ce784 docs: add some documentation dirs to the driver-api book 
Those are subsystem docs, with a mix of kABI and user-faced
docs. While they're not split, keep the dirs where they are,
adding just a pointer to the main index.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
 2019-07-15 11:03:02 -03:00
Mauro Carvalho Chehab
1c349f4fd3 docs: iio: convert to ReST 
Rename the iio documentation files to ReST, add an
index for them and adjust in order to produce a nice html
output via the Sphinx build system.

At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2019-06-22 10:41:57 +01:00
Alexander Sverdlin
8614206a05 iio: adc: New driver for Cirrus Logic EP93xx ADC 
New driver adding support for ADC found on Cirrus Logic EP93xx series of SoCs.
Board specific code must take care to create plaform device with all necessary
resources.

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2017-07-25 19:56:23 +01:00
Sandhya Bankar
964cce16b1 iio: Documentation: Correct the path used to create triggers. 
Correct the path used to create triggers.

Signed-off-by: Sandhya Bankar <bankarsandhya512@gmail.com>
Acked-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
 2016-10-01 00:49:58 -06:00
Daniel Baluta
4c3e2a4036 iio: Documentation: Add IIO configfs documentation 
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Acked-by: Crt Mori <cmo@melexis.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2015-12-03 18:19:28 +00:00